DNN vulnerable to Reflected Cross-Site Scripting (XSS) using url to profile

CVE-2025-59821 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Summary

A reflected cross-site scripting (XSS) vulnerability exists under certain conditions, using a specially crafter url to view a user profile

Description

DNN’s URL/path handling and template rendering can allow specially crafted input to be reflected into a user profile that are returned to the browser. In these cases, the application does not sufficiently neutralize or encode characters that are meaningful in HTML, so an attacker can cause a victim’s browser to interpret attacker-controlled content as part of the page’s HTML.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2025-09-23 15:09:47 UTC
Updated
2025-09-23 19:13:36 UTC
GitHub reviewed
2025-09-23 15:09:47 UTC
NVD published
2025-09-23

EPSS Score

Score Percentile
0.03% 7.11%

CVSS Scores

Base score Version Severity Vector
6.5 3.1 —
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-jc4g-c8ww-5738 ↗
CVE CVE-2025-59821 ↗

CWEs

CWE id Name
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Credits

  • bdukes (remediation_developer)
  • david-poindexter (remediation_reviewer)
  • valadas (remediation_reviewer)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
nuget DotNetNuke.Core < 10.1.0 10.1.0 —

References

cvelogic Threat Intelligence